/*!
 * jQuery UI Datepicker @VERSION
 *
 * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Datepicker
 *
 * Depends:
 *	jquery.ui.core.js
 */
(function( $, undefined ) {

$.extend($.ui, { datepicker: { version: "@VERSION" } });

var PROP_NAME = 'datepicker';
var dpuuid = new Date().getTime();
var instActive;

/* Date picker manager.
   Use the singleton instance of this class, $.datepicker, to interact with the date picker.
   Settings for (groups of) date pickers are maintained in an instance object,
   allowing multiple different settings on the same page. */

function Datepicker() {
    this.debug = false; // Change this to true to start debugging
    this._curInst = null; // The current instance in use
    this._keyEvent = false; // If the last event was a key event
    this._disabledInputs = []; // List of date picker inputs that have been disabled
    this._datepickerShowing = false; // True if the popup picker is showing , false if not
    this._inDialog = false; // True if showing within a "dialog", false if not
    this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
    this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
    this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
    this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
    this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
    this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
    this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
    this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
    this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
    this.regional = []; // Available regional settings, indexed by language code
    this.regional[''] = { // Default regional settings
        closeText: 'Done', // Display text for close link
        prevText: 'Prev', // Display text for previous month link
        nextText: 'Next', // Display text for next month link
        currentText: 'Today', // Display text for current month link
        monthNames: ['January','February','March','April','May','June',
            'July','August','September','October','November','December'], // Names of months for drop-down and formatting
        monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
        dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
        dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
        dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
        weekHeader: 'Wk', // Column header for week of the year
        dateFormat: 'yy-mm-dd', // See format options on parseDate
        firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
        isRTL: false, // True if right-to-left language, false if left-to-right
        showMonthAfterYear: false, // True if the year select precedes month, false for month then year
        yearSuffix: '' // Additional text to append to the year in the month headers
    };
    this._defaults = { // Global defaults for all the date picker instances
        showOn: 'focus', // 'focus' for popup on focus,
            // 'button' for trigger button, or 'both' for either
        showAnim: 'fadeIn', // Name of jQuery animation for popup
        showOptions: {}, // Options for enhanced animations
        defaultDate: null, // Used when field is blank: actual date,
            // +/-number for offset from today, null for today
        appendText: '', // Display text following the input box, e.g. showing the format
        buttonText: '请选择', // Text for trigger button
        buttonImage: '', // URL for trigger button image
        buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
        hideIfNoPrevNext: false, // True to hide next/previous month links
            // if not applicable, false to just disable them
        navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
        gotoCurrent: false, // True if today link goes back to current selection instead
        changeMonth: false, // True if month can be selected directly, false if only prev/next
        changeYear: false, // True if year can be selected directly, false if only prev/next
        yearRange: 'c-10:c+10', // Range of years to display in drop-down,
            // either relative to today's year (-nn:+nn), relative to currently displayed year
            // (c-nn:c+nn), absolute (nnnn:nnnn), or a combination of the above (nnnn:-n)
        showOtherMonths: false, // True to show dates in other months, false to leave blank
        selectOtherMonths: false, // True to allow selection of dates in other months, false for unselectable
        showWeek: false, // True to show week of the year, false to not show it
        calculateWeek: this.iso8601Week, // How to calculate the week of the year,
            // takes a Date and returns the number of the week for it
        shortYearCutoff: '+10', // Short year values < this are in the current century,
            // > this are in the previous century,
            // string value starting with '+' for current year + value
        minDate: null, // The earliest selectable date, or null for no limit
        maxDate: null, // The latest selectable date, or null for no limit
        duration: 'fast', // Duration of display/closure
        beforeShowDay: null, // Function that takes a date and returns an array with
            // [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
            // [2] = cell title (optional), e.g. $.datepicker.noWeekends
        beforeShow: null, // Function that takes an input field and
            // returns a set of custom settings for the date picker
        onSelect: null, // Define a callback function when a date is selected
        onChangeMonthYear: null, // Define a callback function when the month or year is changed
        onClose: null, // Define a callback function when the datepicker is closed
        numberOfMonths: 1, // Number of months to show at a time
        showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
        stepMonths: 1, // Number of months to step back/forward
        stepBigMonths: 12, // Number of months to step back/forward for the big links
        altField: '', // Selector for an alternate field to store selected dates into
        altFormat: '', // The date format to use for the alternate field
        constrainInput: true, // The input is constrained by the current date format
        showButtonPanel: false, // True to show button panel, false to not show it
        autoSize: false, // True to size the input for the date format, false to leave as is
        disabled: false // The initial disabled state
    };
    $.extend(this._defaults, this.regional['']);
    this.dpDiv = bindHover($('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'));
}

$.extend(Datepicker.prototype, {
    /* Class name added to elements to indicate already configured with a date picker. */
    markerClassName: 'hasDatepicker',

    //Keep track of the maximum number of rows displayed (see #7043)
    maxRows: 4,

    /* Debug logging (if enabled). */
    log: function () {
        if (this.debug)
            console.log.apply('', arguments);
    },

    // TODO rename to "widget" when switching to widget factory
    _widgetDatepicker: function() {
        return this.dpDiv;
    },

    /* Override the default settings for all instances of the date picker.
    @param  settings  object - the new settings to use as defaults (anonymous object)
    @return the manager object */
    setDefaults: function(settings) {
        extendRemove(this._defaults, settings || {});
        return this;
    },

    /* Attach the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span
    @param  settings  object - the new settings to use for this date picker instance (anonymous) */
    _attachDatepicker: function(target, settings) {
        // check for settings on the control itself - in namespace 'date:'
        var inlineSettings = null;
        for (var attrName in this._defaults) {
            var attrValue = target.getAttribute('date:' + attrName);
            if (attrValue) {
                inlineSettings = inlineSettings || {};
                try {
                    inlineSettings[attrName] = eval(attrValue);
                } catch (err) {
                    inlineSettings[attrName] = attrValue;
                }
            }
        }
        var nodeName = target.nodeName.toLowerCase();
        var inline = (nodeName == 'div' || nodeName == 'span');
        if (!target.id) {
            this.uuid += 1;
            target.id = 'dp' + this.uuid;
        }
        var inst = this._newInst($(target), inline);
        inst.settings = $.extend({}, settings || {}, inlineSettings || {});
        if (nodeName == 'input') {
            this._connectDatepicker(target, inst);
        } else if (inline) {
            this._inlineDatepicker(target, inst);
        }
    },

    /* Create a new instance object. */
    _newInst: function(target, inline) {
        var id = target[0].id.replace(/([^A-Za-z0-9_-])/g, '\\\\$1'); // escape jQuery meta chars
        return {id: id, input: target, // associated target
            selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
            drawMonth: 0, drawYear: 0, // month being drawn
            inline: inline, // is datepicker inline or not
            dpDiv: (!inline ? this.dpDiv : // presentation div
            bindHover($('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>')))};
    },

    /* Attach the date picker to an input field. */
    _connectDatepicker: function(target, inst) {
        var input = $(target);
        inst.append = $([]);
        inst.trigger = $([]);
        if (input.hasClass(this.markerClassName))
            return;
        this._attachments(input, inst);
        input.addClass(this.markerClassName).keydown(this._doKeyDown).
            keypress(this._doKeyPress).keyup(this._doKeyUp).
            bind("setData.datepicker", function(event, key, value) {
                inst.settings[key] = value;
            }).bind("getData.datepicker", function(event, key) {
                return this._get(inst, key);
            });
        this._autoSize(inst);
        $.data(target, PROP_NAME, inst);
        //If disabled option is true, disable the datepicker once it has been attached to the input (see ticket #5665)
        if( inst.settings.disabled ) {
            this._disableDatepicker( target );
        }
    },

    /* Make attachments based on settings. */
    _attachments: function(input, inst) {
        var appendText = this._get(inst, 'appendText');
        var isRTL = this._get(inst, 'isRTL');
        if (inst.append)
            inst.append.remove();
        if (appendText) {
            inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
            input[isRTL ? 'before' : 'after'](inst.append);
        }
        input.unbind('focus', this._showDatepicker);
        if (inst.trigger)
            inst.trigger.remove();
        var showOn = this._get(inst, 'showOn');
        if (showOn == 'focus' || showOn == 'both') // pop-up date picker when in the marked field
            input.focus(this._showDatepicker);
        if (showOn == 'button' || showOn == 'both') { // pop-up date picker when button clicked
            var buttonText = this._get(inst, 'buttonText');
            var buttonImage = this._get(inst, 'buttonImage');
            inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
                $('<img/>').addClass(this._triggerClass).
                    attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
                $('<button type="button"></button>').addClass(this._triggerClass).
                    html(buttonImage == '' ? buttonText : $('<img/>').attr(
                    { src:buttonImage, alt:buttonText, title:buttonText })));
            input[isRTL ? 'before' : 'after'](inst.trigger);
            inst.trigger.click(function() {
                if ($.datepicker._datepickerShowing && $.datepicker._lastInput == input[0])
                    $.datepicker._hideDatepicker();
                else if ($.datepicker._datepickerShowing && $.datepicker._lastInput != input[0]) {
                    $.datepicker._hideDatepicker();
                    $.datepicker._showDatepicker(input[0]);
                } else
                    $.datepicker._showDatepicker(input[0]);
                return false;
            });
        }
    },

    /* Apply the maximum length for the date format. */
    _autoSize: function(inst) {
        if (this._get(inst, 'autoSize') && !inst.inline) {
            var date = new Date(2009, 12 - 1, 20); // Ensure double digits
            var dateFormat = this._get(inst, 'dateFormat');
            if (dateFormat.match(/[DM]/)) {
                var findMax = function(names) {
                    var max = 0;
                    var maxI = 0;
                    for (var i = 0; i < names.length; i++) {
                        if (names[i].length > max) {
                            max = names[i].length;
                            maxI = i;
                        }
                    }
                    return maxI;
                };
                date.setMonth(findMax(this._get(inst, (dateFormat.match(/MM/) ?
                    'monthNames' : 'monthNamesShort'))));
                date.setDate(findMax(this._get(inst, (dateFormat.match(/DD/) ?
                    'dayNames' : 'dayNamesShort'))) + 20 - date.getDay());
            }
            inst.input.attr('size', this._formatDate(inst, date).length);
        }
    },

    /* Attach an inline date picker to a div. */
    _inlineDatepicker: function(target, inst) {
        var divSpan = $(target);
        if (divSpan.hasClass(this.markerClassName))
            return;
        divSpan.addClass(this.markerClassName).append(inst.dpDiv).
            bind("setData.datepicker", function(event, key, value){
                inst.settings[key] = value;
            }).bind("getData.datepicker", function(event, key){
                return this._get(inst, key);
            });
        $.data(target, PROP_NAME, inst);
        this._setDate(inst, this._getDefaultDate(inst), true);
        this._updateDatepicker(inst);
        this._updateAlternate(inst);
        //If disabled option is true, disable the datepicker before showing it (see ticket #5665)
        if( inst.settings.disabled ) {
            this._disableDatepicker( target );
        }
        // Set display:block in place of inst.dpDiv.show() which won't work on disconnected elements
        // http://bugs.jqueryui.com/ticket/7552 - A Datepicker created on a detached div has zero height
        inst.dpDiv.css( "display", "block" );
    },

    /* Pop-up the date picker in a "dialog" box.
    @param  input     element - ignored
    @param  date      string or Date - the initial date to display
    @param  onSelect  function - the function to call when a date is selected
    @param  settings  object - update the dialog date picker instance's settings (anonymous object)
    @param  pos       int[2] - coordinates for the dialog's position within the screen or
                        event - with x/y coordinates or
                        leave empty for default (screen centre)
    @return the manager object */
    _dialogDatepicker: function(input, date, onSelect, settings, pos) {
        var inst = this._dialogInst; // internal instance
        if (!inst) {
            this.uuid += 1;
            var id = 'dp' + this.uuid;
            this._dialogInput = $('<input type="text" id="' + id +
                '" style="position: absolute; top: -100px; width: 0px; z-index: -10;"/>');
            this._dialogInput.keydown(this._doKeyDown);
            $('body').append(this._dialogInput);
            inst = this._dialogInst = this._newInst(this._dialogInput, false);
            inst.settings = {};
            $.data(this._dialogInput[0], PROP_NAME, inst);
        }
        extendRemove(inst.settings, settings || {});
        date = (date && date.constructor == Date ? this._formatDate(inst, date) : date);
        this._dialogInput.val(date);

        this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
        if (!this._pos) {
            var browserWidth = document.documentElement.clientWidth;
            var browserHeight = document.documentElement.clientHeight;
            var scrollX = document.documentElement.scrollLeft || document.body.scrollLeft;
            var scrollY = document.documentElement.scrollTop || document.body.scrollTop;
            this._pos = // should use actual width/height below
                [(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
        }

        // move input on screen for focus, but hidden behind dialog
        this._dialogInput.css('left', (this._pos[0] + 20) + 'px').css('top', this._pos[1] + 'px');
        inst.settings.onSelect = onSelect;
        this._inDialog = true;
        this.dpDiv.addClass(this._dialogClass);
        this._showDatepicker(this._dialogInput[0]);
        if ($.blockUI)
            $.blockUI(this.dpDiv);
        $.data(this._dialogInput[0], PROP_NAME, inst);
        return this;
    },

    /* Detach a datepicker from its control.
    @param  target    element - the target input field or division or span */
    _destroyDatepicker: function(target) {
        var $target = $(target);
        var inst = $.data(target, PROP_NAME);
        if (!$target.hasClass(this.markerClassName)) {
            return;
        }
        var nodeName = target.nodeName.toLowerCase();
        $.removeData(target, PROP_NAME);
        if (nodeName == 'input') {
            inst.append.remove();
            inst.trigger.remove();
            $target.removeClass(this.markerClassName).
                unbind('focus', this._showDatepicker).
                unbind('keydown', this._doKeyDown).
                unbind('keypress', this._doKeyPress).
                unbind('keyup', this._doKeyUp);
        } else if (nodeName == 'div' || nodeName == 'span')
            $target.removeClass(this.markerClassName).empty();
    },

    /* Enable the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span */
    _enableDatepicker: function(target) {
        var $target = $(target);
        var inst = $.data(target, PROP_NAME);
        if (!$target.hasClass(this.markerClassName)) {
            return;
        }
        var nodeName = target.nodeName.toLowerCase();
        if (nodeName == 'input') {
            target.disabled = false;
            inst.trigger.filter('button').
                each(function() { this.disabled = false; }).end().
                filter('img').css({opacity: '1.0', cursor: ''});
        }
        else if (nodeName == 'div' || nodeName == 'span') {
            var inline = $target.children('.' + this._inlineClass);
            inline.children().removeClass('ui-state-disabled');
            inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
                prop("disabled", false);
        }
        this._disabledInputs = $.map(this._disabledInputs,
            function(value) { return (value == target ? null : value); }); // delete entry
    },

    /* Disable the date picker to a jQuery selection.
    @param  target    element - the target input field or division or span */
    _disableDatepicker: function(target) {
        var $target = $(target);
        var inst = $.data(target, PROP_NAME);
        if (!$target.hasClass(this.markerClassName)) {
            return;
        }
        var nodeName = target.nodeName.toLowerCase();
        if (nodeName == 'input') {
            target.disabled = true;
            inst.trigger.filter('button').
                each(function() { this.disabled = true; }).end().
                filter('img').css({opacity: '0.5', cursor: 'default'});
        }
        else if (nodeName == 'div' || nodeName == 'span') {
            var inline = $target.children('.' + this._inlineClass);
            inline.children().addClass('ui-state-disabled');
            inline.find("select.ui-datepicker-month, select.ui-datepicker-year").
                prop("disabled", true);
        }
        this._disabledInputs = $.map(this._disabledInputs,
            function(value) { return (value == target ? null : value); }); // delete entry
        this._disabledInputs[this._disabledInputs.length] = target;
    },

    /* Is the first field in a jQuery collection disabled as a datepicker?
    @param  target    element - the target input field or division or span
    @return boolean - true if disabled, false if enabled */
    _isDisabledDatepicker: function(target) {
        if (!target) {
            return false;
        }
        for (var i = 0; i < this._disabledInputs.length; i++) {
            if (this._disabledInputs[i] == target)
                return true;
        }
        return false;
    },

    /* Retrieve the instance data for the target control.
    @param  target  element - the target input field or division or span
    @return  object - the associated instance data
    @throws  error if a jQuery problem getting data */
    _getInst: function(target) {
        try {
            return $.data(target, PROP_NAME);
        }
        catch (err) {
            throw 'Missing instance data for this datepicker';
        }
    },

    /* Update or retrieve the settings for a date picker attached to an input field or division.
    @param  target  element - the target input field or division or span
    @param  name    object - the new settings to update or
                    string - the name of the setting to change or retrieve,
                    when retrieving also 'all' for all instance settings or
                    'defaults' for all global defaults
    @param  value   any - the new value for the setting
                    (omit if above is an object or to retrieve a value) */
    _optionDatepicker: function(target, name, value) {
        var inst = this._getInst(target);
        if (arguments.length == 2 && typeof name == 'string') {
            return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
                (inst ? (name == 'all' ? $.extend({}, inst.settings) :
                this._get(inst, name)) : null));
        }
        var settings = name || {};
        if (typeof name == 'string') {
            settings = {};
            settings[name] = value;
        }
        if (inst) {
            if (this._curInst == inst) {
                this._hideDatepicker();
            }
            var date = this._getDateDatepicker(target, true);
            var minDate = this._getMinMaxDate(inst, 'min');
            var maxDate = this._getMinMaxDate(inst, 'max');
            extendRemove(inst.settings, settings);
            // reformat the old minDate/maxDate values if dateFormat changes and a new minDate/maxDate isn't provided
            if (minDate !== null && settings['dateFormat'] !== undefined && settings['minDate'] === undefined)
                inst.settings.minDate = this._formatDate(inst, minDate);
            if (maxDate !== null && settings['dateFormat'] !== undefined && settings['maxDate'] === undefined)
                inst.settings.maxDate = this._formatDate(inst, maxDate);
            this._attachments($(target), inst);
            this._autoSize(inst);
            this._setDate(inst, date);
            this._updateAlternate(inst);
            this._updateDatepicker(inst);
        }
    },

    // change method deprecated
    _changeDatepicker: function(target, name, value) {
        this._optionDatepicker(target, name, value);
    },

    /* Redraw the date picker attached to an input field or division.
    @param  target  element - the target input field or division or span */
    _refreshDatepicker: function(target) {
        var inst = this._getInst(target);
        if (inst) {
            this._updateDatepicker(inst);
        }
    },

    /* Set the dates for a jQuery selection.
    @param  target   element - the target input field or division or span
    @param  date     Date - the new date */
    _setDateDatepicker: function(target, date) {
        var inst = this._getInst(target);
        if (inst) {
            this._setDate(inst, date);
            this._updateDatepicker(inst);
            this._updateAlternate(inst);
        }
    },

    /* Get the date(s) for the first entry in a jQuery selection.
    @param  target     element - the target input field or division or span
    @param  noDefault  boolean - true if no default date is to be used
    @return Date - the current date */
    _getDateDatepicker: function(target, noDefault) {
        var inst = this._getInst(target);
        if (inst && !inst.inline)
            this._setDateFromField(inst, noDefault);
        return (inst ? this._getDate(inst) : null);
    },

    /* Handle keystrokes. */
    _doKeyDown: function(event) {
        var inst = $.datepicker._getInst(event.target);
        var handled = true;
        var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
        inst._keyEvent = true;
        if ($.datepicker._datepickerShowing)
            switch (event.keyCode) {
                case 9: $.datepicker._hideDatepicker();
                        handled = false;
                        break; // hide on tab out
                case 13: var sel = $('td.' + $.datepicker._dayOverClass + ':not(.' +
                                    $.datepicker._currentClass + ')', inst.dpDiv);
                        if (sel[0])
                            $.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
                            var onSelect = $.datepicker._get(inst, 'onSelect');
                            if (onSelect) {
                                var dateStr = $.datepicker._formatDate(inst);

                                // trigger custom callback
                                onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]);
                            }
                        else
                            $.datepicker._hideDatepicker();
                        return false; // don't submit the form
                        break; // select the value on enter
                case 27: $.datepicker._hideDatepicker();
                        break; // hide on escape
                case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                            -$.datepicker._get(inst, 'stepBigMonths') :
                            -$.datepicker._get(inst, 'stepMonths')), 'M');
                        break; // previous month/year on page up/+ ctrl
                case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                            +$.datepicker._get(inst, 'stepBigMonths') :
                            +$.datepicker._get(inst, 'stepMonths')), 'M');
                        break; // next month/year on page down/+ ctrl
                case 35: if (event.ctrlKey || event.metaKey) $.datepicker._clearDate(event.target);
                        handled = event.ctrlKey || event.metaKey;
                        break; // clear on ctrl or command +end
                case 36: if (event.ctrlKey || event.metaKey) $.datepicker._gotoToday(event.target);
                        handled = event.ctrlKey || event.metaKey;
                        break; // current on ctrl or command +home
                case 37: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
                        handled = event.ctrlKey || event.metaKey;
                        // -1 day on ctrl or command +left
                        if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                                    -$.datepicker._get(inst, 'stepBigMonths') :
                                    -$.datepicker._get(inst, 'stepMonths')), 'M');
                        // next month/year on alt +left on Mac
                        break;
                case 38: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
                        handled = event.ctrlKey || event.metaKey;
                        break; // -1 week on ctrl or command +up
                case 39: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
                        handled = event.ctrlKey || event.metaKey;
                        // +1 day on ctrl or command +right
                        if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
                                    +$.datepicker._get(inst, 'stepBigMonths') :
                                    +$.datepicker._get(inst, 'stepMonths')), 'M');
                        // next month/year on alt +right
                        break;
                case 40: if (event.ctrlKey || event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
                        handled = event.ctrlKey || event.metaKey;
                        break; // +1 week on ctrl or command +down
                default: handled = false;
            }
        else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
            $.datepicker._showDatepicker(this);
        else {
            handled = false;
        }
        if (handled) {
            event.preventDefault();
            event.stopPropagation();
        }
    },

    /* Filter entered characters - based on date format. */
    _doKeyPress: function(event) {
        var inst = $.datepicker._getInst(event.target);
        if ($.datepicker._get(inst, 'constrainInput')) {
            var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
            var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
            return event.ctrlKey || event.metaKey || (chr < ' ' || !chars || chars.indexOf(chr) > -1);
        }
    },

    /* Synchronise manual entry and field/alternate field. */
    _doKeyUp: function(event) {
        var inst = $.datepicker._getInst(event.target);
        if (inst.input.val() != inst.lastVal) {
            try {
                var date = $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
                    (inst.input ? inst.input.val() : null),
                    $.datepicker._getFormatConfig(inst));
                if (date) { // only if valid
                    $.datepicker._setDateFromField(inst);
                    $.datepicker._updateAlternate(inst);
                    $.datepicker._updateDatepicker(inst);
                }
            }
            catch (err) {
                $.datepicker.log(err);
            }
        }
        return true;
    },

    /* Pop-up the date picker for a given input field.
    If false returned from beforeShow event handler do not show.
    @param  input  element - the input field attached to the date picker or
                    event - if triggered by focus */
    _showDatepicker: function(input) {
        input = input.target || input;
        if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
            input = $('input', input.parentNode)[0];
        if ($.datepicker._isDisabledDatepicker(input) || $.datepicker._lastInput == input) // already here
            return;
        var inst = $.datepicker._getInst(input);
        if ($.datepicker._curInst && $.datepicker._curInst != inst) {
            $.datepicker._curInst.dpDiv.stop(true, true);
            if ( inst && $.datepicker._datepickerShowing ) {
                $.datepicker._hideDatepicker( $.datepicker._curInst.input[0] );
            }
        }
        var beforeShow = $.datepicker._get(inst, 'beforeShow');
        var beforeShowSettings = beforeShow ? beforeShow.apply(input, [input, inst]) : {};
        if(beforeShowSettings === false){
            //false
            return;
        }
        extendRemove(inst.settings, beforeShowSettings);
        inst.lastVal = null;
        $.datepicker._lastInput = input;
        $.datepicker._setDateFromField(inst);
        if ($.datepicker._inDialog) // hide cursor
            input.value = '';
        if (!$.datepicker._pos) { // position below input
            $.datepicker._pos = $.datepicker._findPos(input);
            $.datepicker._pos[1] += input.offsetHeight; // add the height
        }
        var isFixed = false;
        $(input).parents().each(function() {
            isFixed |= $(this).css('position') == 'fixed';
            return !isFixed;
        });
        if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
            $.datepicker._pos[0] -= document.documentElement.scrollLeft;
            $.datepicker._pos[1] -= document.documentElement.scrollTop;
        }
        var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
        $.datepicker._pos = null;
        //to avoid flashes on Firefox
        inst.dpDiv.empty();
        // determine sizing offscreen
        inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
        $.datepicker._updateDatepicker(inst);
        // fix width for dynamic number of date pickers
        // and adjust position before showing
        offset = $.datepicker._checkOffset(inst, offset, isFixed);
        inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
            'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
            left: offset.left + 'px', top: offset.top + 'px'});
        if (!inst.inline) {
            var showAnim = $.datepicker._get(inst, 'showAnim');
            var duration = $.datepicker._get(inst, 'duration');
            var postProcess = function() {
                var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
                if( !! cover.length ){
                    var borders = $.datepicker._getBorders(inst.dpDiv);
                    cover.css({left: -borders[0], top: -borders[1],
                        width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()});
                }
            };
            inst.dpDiv.zIndex($(input).zIndex()+1);
            $.datepicker._datepickerShowing = true;

            // DEPRECATED: after BC for 1.8.x $.effects[ showAnim ] is not needed
            if ( $.effects && ( $.effects.effect[ showAnim ] || $.effects[ showAnim ] ) )
                inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
            else
                inst.dpDiv[showAnim || 'show']((showAnim ? duration : null), postProcess);
            if (!showAnim || !duration)
                postProcess();
            if (inst.input.is(':visible') && !inst.input.is(':disabled'))
                inst.input.focus();
            $.datepicker._curInst = inst;
        }
       // this._checkHighSelect(inst.selectedYear,inst.selectedMonth+1);
        var now_temp_month =(inst.selectedMonth+1)+'';
        var now_temp_month =  now_temp_month.length==1?'0'+now_temp_month:now_temp_month;
        var y_m = inst.selectedYear+'-'+now_temp_month+'-';
        var $status = 0;
        var temp = ss.split(',');
        $('td a').each(function(i){
            $status = 0
            for(var i=0;i<temp.length;i++){
                if(temp[i]!=''){
                    var $now_temp_day = this.innerHTML.length==1?'0'+this.innerHTML:this.innerHTML;
                    var $now_temp_date = y_m+$now_temp_day;
                    if($now_temp_date == temp[i]){
                        $status = 1;
                    }
                }
            }
            if($status == 1){
                $(this).addClass("ui-state-highlight");
            }else{
                $(this).removeClass("ui-state-highlight");
            }
        });
    },

    /* Generate the date picker content. */
    _updateDatepicker: function(inst) {
        this.maxRows = 4; //Reset the max number of rows being displayed (see #7043)
        var borders = $.datepicker._getBorders(inst.dpDiv);
        instActive = inst; // for delegate hover events
        inst.dpDiv.empty().append(this._generateHTML(inst));
        this._attachHandlers(inst);
        var cover = inst.dpDiv.find('iframe.ui-datepicker-cover'); // IE6- only
        if( !!cover.length ){ //avoid call to outerXXXX() when not in IE6
            cover.css({left: -borders[0], top: -borders[1], width: inst.dpDiv.outerWidth(), height: inst.dpDiv.outerHeight()})
        }
        inst.dpDiv.find('.' + this._dayOverClass + ' a').mouseover();
        var numMonths = this._getNumberOfMonths(inst);
        var cols = numMonths[1];
        var width = 17;
        inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
        if (cols > 1)
            inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
        inst.dpDiv[(numMonths[0] != 1 || numMonths[1] != 1 ? 'add' : 'remove') +
            'Class']('ui-datepicker-multi');
        inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
            'Class']('ui-datepicker-rtl');
        if (inst == $.datepicker._curInst && $.datepicker._datepickerShowing && inst.input &&
                // #6694 - don't focus the input if it's already focused
                // this breaks the change event in IE
                inst.input.is(':visible') && !inst.input.is(':disabled') && inst.input[0] != document.activeElement)
            inst.input.focus();
        // deffered render of the years select (to avoid flashes on Firefox)
        if( inst.yearshtml ){
            var origyearshtml = inst.yearshtml;
            setTimeout(function(){
                //assure that inst.yearshtml didn't change.
                if( origyearshtml === inst.yearshtml && inst.yearshtml ){
                    inst.dpDiv.find('select.ui-datepicker-year:first').replaceWith(inst.yearshtml);
                }
                origyearshtml = inst.yearshtml = null;
            }, 0);
        }
    },

    /* Retrieve the size of left and top borders for an element.
    @param  elem  (jQuery object) the element of interest
    @return  (number[2]) the left and top borders */
    _getBorders: function(elem) {
        var convert = function(value) {
            return {thin: 1, medium: 2, thick: 3}[value] || value;
        };
        return [parseFloat(convert(elem.css('border-left-width'))),
            parseFloat(convert(elem.css('border-top-width')))];
    },

    /* Check positioning to remain on screen. */
    _checkOffset: function(inst, offset, isFixed) {
        var dpWidth = inst.dpDiv.outerWidth();
        var dpHeight = inst.dpDiv.outerHeight();
        var inputWidth = inst.input ? inst.input.outerWidth() : 0;
        var inputHeight = inst.input ? inst.input.outerHeight() : 0;
        var viewWidth = document.documentElement.clientWidth + $(document).scrollLeft();
        var viewHeight = document.documentElement.clientHeight + $(document).scrollTop();

        offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
        offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
        offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;

        // now check if datepicker is showing outside window viewport - move to a better place if so.
        offset.left -= Math.min(offset.left, (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ?
            Math.abs(offset.left + dpWidth - viewWidth) : 0);
        offset.top -= Math.min(offset.top, (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ?
            Math.abs(dpHeight + inputHeight) : 0);

        return offset;
    },

    /* Find an object's position on the screen. */
    _findPos: function(obj) {
        var inst = this._getInst(obj);
        var isRTL = this._get(inst, 'isRTL');
        while (obj && (obj.type == 'hidden' || obj.nodeType != 1 || $.expr.filters.hidden(obj))) {
            obj = obj[isRTL ? 'previousSibling' : 'nextSibling'];
        }
        var position = $(obj).offset();
        return [position.left, position.top];
    },

    /* Hide the date picker from view.
    @param  input  element - the input field attached to the date picker */
    _hideDatepicker: function(input) {
        var inst = this._curInst;
        if (!inst || (input && inst != $.data(input, PROP_NAME)))
            return;
        if (this._datepickerShowing) {
            var showAnim = this._get(inst, 'showAnim');
            var duration = this._get(inst, 'duration');
            var postProcess = function() {
                $.datepicker._tidyDialog(inst);
            };

            // DEPRECATED: after BC for 1.8.x $.effects[ showAnim ] is not needed
            if ( $.effects && ( $.effects.effect[ showAnim ] || $.effects[ showAnim ] ) )
                inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
            else
                inst.dpDiv[(showAnim == 'slideDown' ? 'slideUp' :
                    (showAnim == 'fadeIn' ? 'fadeOut' : 'hide'))]((showAnim ? duration : null), postProcess);
            if (!showAnim)
                postProcess();
            this._datepickerShowing = false;
            var onClose = this._get(inst, 'onClose');
            if (onClose)
                onClose.apply((inst.input ? inst.input[0] : null),
                    [(inst.input ? inst.input.val() : ''), inst]);
            this._lastInput = null;
            if (this._inDialog) {
                this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
                if ($.blockUI) {
                    $.unblockUI();
                    $('body').append(this.dpDiv);
                }
            }
            this._inDialog = false;
        }
    },

    /* Tidy up after a dialog display. */
    _tidyDialog: function(inst) {
        inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
    },

    /* Close date picker if clicked elsewhere. */
    _checkExternalClick: function(event) {
        if (!$.datepicker._curInst)
            return;

        var $target = $(event.target),
            inst = $.datepicker._getInst($target[0]);

        if ( ( ( $target[0].id != $.datepicker._mainDivId &&
                $target.parents('#' + $.datepicker._mainDivId).length == 0 &&
                !$target.hasClass($.datepicker.markerClassName) &&
                !$target.closest("." + $.datepicker._triggerClass).length &&
                $.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI) ) ) ||
            ( $target.hasClass($.datepicker.markerClassName) && $.datepicker._curInst != inst ) )
            $.datepicker._hideDatepicker();
    },

    /* Adjust one of the date sub-fields. */
    _adjustDate: function(id, offset, period) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        if (this._isDisabledDatepicker(target[0])) {
            return;
        }
        this._adjustInstDate(inst, offset +
            (period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
            period);
        this._updateDatepicker(inst);
    },

    /* Action for current link. */
    _gotoToday: function(id) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
            inst.selectedDay = inst.currentDay;
            inst.drawMonth = inst.selectedMonth = inst.currentMonth;
            inst.drawYear = inst.selectedYear = inst.currentYear;
        }
        else {
            var date = new Date();
            inst.selectedDay = date.getDate();
            inst.drawMonth = inst.selectedMonth = date.getMonth();
            inst.drawYear = inst.selectedYear = date.getFullYear();
        }
        this._notifyChange(inst);
        this._adjustDate(target);
    },

    /* Action for selecting a new month/year. */
    _selectMonthYear: function(id, select, period) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
        inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
            parseInt(select.options[select.selectedIndex].value,10);
        console.log(inst);
        this._notifyChange(inst);
        this._adjustDate(target);
        this._checkHighSelect(inst.selectedYear,inst.selectedMonth+1);
    },

    /* Action for selecting a day. */
    _selectDay: function(id, month, year, td) {
        var target = $(id);
        if ($(td).hasClass(this._unselectableClass) || this._isDisabledDatepicker(target[0])) {
            return;
        }
        var inst = this._getInst(target[0]);
        inst.selectedDay = inst.currentDay = $('a', td).html();
        inst.selectedMonth = inst.currentMonth = month;
        inst.selectedYear = inst.currentYear = year;
        str =  this._formatDate(inst,inst.currentDay, inst.currentMonth, inst.currentYear) + ",";
        if(ss.indexOf(str) != "-1" || str == "NaN-NaN-NaN,"){
            var temp = ss.split(',');
            var new_ss= '';
            for(var i=0;i<temp.length;i++){
                if(temp[i]!='' && str != (temp[i]+",")){
                    new_ss+=temp[i]+',';
                }
            }
            ss = new_ss;
        }else{
              ss += str;
        }
        this._checkHighSelect(inst.selectedYear,inst.selectedMonth+1);
        this._selectDate(id, ss);
    },
    _checkHighSelect: function(year,month){
        var now_temp_month =month+'';
        var now_temp_month =  now_temp_month.length==1?'0'+now_temp_month:now_temp_month;
        var y_m = year+'-'+now_temp_month+'-';
        var $status = 0;
        var temp = ss.split(',');
        $('td a').each(function(i){
            $status = 0
            for(var i=0;i<temp.length;i++){
                if(temp[i]!=''){
                    var $now_temp_day = this.innerHTML.length==1?'0'+this.innerHTML:this.innerHTML;
                    var $now_temp_date = y_m+$now_temp_day;
                    if($now_temp_date == temp[i]){
                        $status = 1;
                    }
                }
            }
            if($status == 1){
                $(this).addClass("ui-state-highlight");
            }else{
                $(this).removeClass("ui-state-highlight");
            }
        });
    },
    /* Erase the input field and hide the date picker. */
    _clearDate: function(id) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        this._selectDate(target, '');
    },

    /* Update the input field with the selected date. */
    _selectDate: function(id, dateStr) {
        var target = $(id);
        var inst = this._getInst(target[0]);
        dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
        if (inst.input)
            inst.input.val(dateStr);
        this._updateAlternate(inst);
        var onSelect = this._get(inst, 'onSelect');
        if (onSelect)
             onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]); // trigger custom callback
        else if (inst.input)
            inst.input.trigger('change'); // fire the change event
        if (inst.inline)
            this._updateDatepicker(inst);
        else {
            //this._hideDatepicker();
            this._lastInput = inst.input[0];
            if (typeof(inst.input[0]) != 'object')
                inst.input.focus(); // restore focus
            this._lastInput = null;
        }

    },

    /* Update any alternate field to synchronise with the main field. */
    _updateAlternate: function(inst) {
        var altField = this._get(inst, 'altField');
        if (altField) { // update alternate field too
            var altFormat = this._get(inst, 'altFormat') || this._get(inst, 'dateFormat');
            var date = this._getDate(inst);
            var dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
            $(altField).each(function() { $(this).val(dateStr); });
        }
    },

    /* Set as beforeShowDay function to prevent selection of weekends.
    @param  date  Date - the date to customise
    @return [boolean, string] - is this date selectable?, what is its CSS class? */
    noWeekends: function(date) {
        var day = date.getDay();
        return [(day > 0 && day < 6), ''];
    },

    /* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
    @param  date  Date - the date to get the week for
    @return  number - the number of the week within the year that contains this date */
    iso8601Week: function(date) {
        var checkDate = new Date(date.getTime());
        // Find Thursday of this week starting on Monday
        checkDate.setDate(checkDate.getDate() + 4 - (checkDate.getDay() || 7));
        var time = checkDate.getTime();
        checkDate.setMonth(0); // Compare with Jan 1
        checkDate.setDate(1);
        return Math.floor(Math.round((time - checkDate) / 86400000) / 7) + 1;
    },

    /* Parse a string value into a date object.
    See formatDate below for the possible formats.

    @param  format    string - the expected format of the date
    @param  value     string - the date in the above format
    @param  settings  Object - attributes include:
                        shortYearCutoff  number - the cutoff year for determining the century (optional)
                        dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
                        dayNames         string[7] - names of the days from Sunday (optional)
                        monthNamesShort  string[12] - abbreviated names of the months (optional)
                        monthNames       string[12] - names of the months (optional)
    @return  Date - the extracted date value or null if value is blank */
    parseDate: function (format, value, settings) {
        if (format == null || value == null)
            throw 'Invalid arguments';
        value = (typeof value == 'object' ? value.toString() : value + '');
        if (value == '')
            return null;
        var shortYearCutoff = (settings ? settings.shortYearCutoff : null) || this._defaults.shortYearCutoff;
        shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
                new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
        var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
        var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
        var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
        var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
        var year = -1;
        var month = -1;
        var day = -1;
        var doy = -1;
        var literal = false;
        // Check whether a format character is doubled
        var lookAhead = function(match) {
            var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
            if (matches)
                iFormat++;
            return matches;
        };
        // Extract a number from the string value
        var getNumber = function(match) {
            var isDoubled = lookAhead(match);
            var size = (match == '@' ? 14 : (match == '!' ? 20 :
                (match == 'y' && isDoubled ? 4 : (match == 'o' ? 3 : 2))));
            var digits = new RegExp('^\\d{1,' + size + '}');
            var num = value.substring(iValue).match(digits);
            if (!num)
                throw 'Missing number at position ' + iValue;
            iValue += num[0].length;
            return parseInt(num[0], 10);
        };
        // Extract a name from the string value and convert to an index
        var getName = function(match, shortNames, longNames) {
            var names = $.map(lookAhead(match) ? longNames : shortNames, function (v, k) {
                return [ [k, v] ];
            }).sort(function (a, b) {
                return -(a[1].length - b[1].length);
            });
            var index = -1;
            $.each(names, function (i, pair) {
                var name = pair[1];
                if (value.substr(iValue, name.length).toLowerCase() == name.toLowerCase()) {
                    index = pair[0];
                    iValue += name.length;
                    return false;
                }
            });
            if (index != -1)
                return index + 1;
            else
                throw 'Unknown name at position ' + iValue;
        };
        // Confirm that a literal character matches the string value
        var checkLiteral = function() {
            if (value.charAt(iValue) != format.charAt(iFormat))
                throw 'Unexpected literal at position ' + iValue;
            iValue++;
        };
        var iValue = 0;
        for (var iFormat = 0; iFormat < format.length; iFormat++) {
            if (literal)
                if (format.charAt(iFormat) == "'" && !lookAhead("'"))
                    literal = false;
                else
                    checkLiteral();
            else
                switch (format.charAt(iFormat)) {
                    case 'd':
                        day = getNumber('d');
                        break;
                    case 'D':
                        getName('D', dayNamesShort, dayNames);
                        break;
                    case 'o':
                        doy = getNumber('o');
                        break;
                    case 'm':
                        month = getNumber('m');
                        break;
                    case 'M':
                        month = getName('M', monthNamesShort, monthNames);
                        break;
                    case 'y':
                        year = getNumber('y');
                        break;
                    case '@':
                        var date = new Date(getNumber('@'));
                        year = date.getFullYear();
                        month = date.getMonth() + 1;
                        day = date.getDate();
                        break;
                    case '!':
                        var date = new Date((getNumber('!') - this._ticksTo1970) / 10000);
                        year = date.getFullYear();
                        month = date.getMonth() + 1;
                        day = date.getDate();
                        break;
                    case "'":
                        if (lookAhead("'"))
                            checkLiteral();
                        else
                            literal = true;
                        break;
                    default:
                        checkLiteral();
                }
        }
        if (iValue < value.length){
            var extra = value.substr(iValue);
            if (!/^\s+/.test(extra)) {
                throw "Extra/unparsed characters found in date: " + extra;
            }
        }
        if (year == -1)
            year = new Date().getFullYear();
        else if (year < 100)
            year += new Date().getFullYear() - new Date().getFullYear() % 100 +
                (year <= shortYearCutoff ? 0 : -100);
        if (doy > -1) {
            month = 1;
            day = doy;
            do {
                var dim = this._getDaysInMonth(year, month - 1);
                if (day <= dim)
                    break;
                month++;
                day -= dim;
            } while (true);
        }
        var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
        if (date.getFullYear() != year || date.getMonth() + 1 != month || date.getDate() != day)
            throw 'Invalid date'; // E.g. 31/02/00
        return date;
    },

    /* Standard date formats. */
    ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
    COOKIE: 'D, dd M yy',
    ISO_8601: 'yy-mm-dd',
    RFC_822: 'D, d M y',
    RFC_850: 'DD, dd-M-y',
    RFC_1036: 'D, d M y',
    RFC_1123: 'D, d M yy',
    RFC_2822: 'D, d M yy',
    RSS: 'D, d M y', // RFC 822
    TICKS: '!',
    TIMESTAMP: '@',
    W3C: 'yy-mm-dd', // ISO 8601

    _ticksTo1970: (((1970 - 1) * 365 + Math.floor(1970 / 4) - Math.floor(1970 / 100) +
        Math.floor(1970 / 400)) * 24 * 60 * 60 * 10000000),

    /* Format a date object into a string value.
    The format can be combinations of the following:
    d  - day of month (no leading zero)
    dd - day of month (two digit)
    o  - day of year (no leading zeros)
    oo - day of year (three digit)
    D  - day name short
    DD - day name long
    m  - month of year (no leading zero)
    mm - month of year (two digit)
    M  - month name short
    MM - month name long
    y  - year (two digit)
    yy - year (four digit)
    @ - Unix timestamp (ms since 01/01/1970)
    ! - Windows ticks (100ns since 01/01/0001)
    '...' - literal text
    '' - single quote

    @param  format    string - the desired format of the date
    @param  date      Date - the date value to format
    @param  settings  Object - attributes include:
                        dayNamesShort    string[7] - abbreviated names of the days from Sunday (optional)
                        dayNames         string[7] - names of the days from Sunday (optional)
                        monthNamesShort  string[12] - abbreviated names of the months (optional)
                        monthNames       string[12] - names of the months (optional)
    @return  string - the date in the above format */
    formatDate: function (format, date, settings) {
        if (!date)
            return '';
        var dayNamesShort = (settings ? settings.dayNamesShort : null) || this._defaults.dayNamesShort;
        var dayNames = (settings ? settings.dayNames : null) || this._defaults.dayNames;
        var monthNamesShort = (settings ? settings.monthNamesShort : null) || this._defaults.monthNamesShort;
        var monthNames = (settings ? settings.monthNames : null) || this._defaults.monthNames;
        // Check whether a format character is doubled
        var lookAhead = function(match) {
            var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
            if (matches)
                iFormat++;
            return matches;
        };
        // Format a number, with leading zero if necessary
        var formatNumber = function(match, value, len) {
            var num = '' + value;
            if (lookAhead(match))
                while (num.length < len)
                    num = '0' + num;
            return num;
        };
        // Format a name, short or long as requested
        var formatName = function(match, value, shortNames, longNames) {
            return (lookAhead(match) ? longNames[value] : shortNames[value]);
        };
        var output = '';
        var literal = false;
        if (date)
            for (var iFormat = 0; iFormat < format.length; iFormat++) {
                if (literal)
                    if (format.charAt(iFormat) == "'" && !lookAhead("'"))
                        literal = false;
                    else
                        output += format.charAt(iFormat);
                else
                    switch (format.charAt(iFormat)) {
                        case 'd':
                            output += formatNumber('d', date.getDate(), 2);
                            break;
                        case 'D':
                            output += formatName('D', date.getDay(), dayNamesShort, dayNames);
                            break;
                        case 'o':
                            output += formatNumber('o',
                                Math.round((new Date(date.getFullYear(), date.getMonth(), date.getDate()).getTime() - new Date(date.getFullYear(), 0, 0).getTime()) / 86400000), 3);
                            break;
                        case 'm':
                            output += formatNumber('m', date.getMonth() + 1, 2);
                            break;
                        case 'M':
                            output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
                            break;
                        case 'y':
                            output += (lookAhead('y') ? date.getFullYear() :
                                (date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
                            break;
                        case '@':
                            output += date.getTime();
                            break;
                        case '!':
                            output += date.getTime() * 10000 + this._ticksTo1970;
                            break;
                        case "'":
                            if (lookAhead("'"))
                                output += "'";
                            else
                                literal = true;
                            break;
                        default:
                            output += format.charAt(iFormat);
                    }
            }
        return output;
    },

    /* Extract all possible characters from the date format. */
    _possibleChars: function (format) {
        var chars = '';
        var literal = false;
        // Check whether a format character is doubled
        var lookAhead = function(match) {
            var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
            if (matches)
                iFormat++;
            return matches;
        };
        for (var iFormat = 0; iFormat < format.length; iFormat++)
            if (literal)
                if (format.charAt(iFormat) == "'" && !lookAhead("'"))
                    literal = false;
                else
                    chars += format.charAt(iFormat);
            else
                switch (format.charAt(iFormat)) {
                    case 'd': case 'm': case 'y': case '@':
                        chars += '0123456789';
                        break;
                    case 'D': case 'M':
                        return null; // Accept anything
                    case "'":
                        if (lookAhead("'"))
                            chars += "'";
                        else
                            literal = true;
                        break;
                    default:
                        chars += format.charAt(iFormat);
                }
        return chars;
    },

    /* Get a setting value, defaulting if necessary. */
    _get: function(inst, name) {
        return inst.settings[name] !== undefined ?
            inst.settings[name] : this._defaults[name];
    },

    /* Parse existing date and initialise date picker. */
    _setDateFromField: function(inst, noDefault) {
        if (inst.input.val() == inst.lastVal) {
            return;
        }
        var dateFormat = this._get(inst, 'dateFormat');
        var dates = inst.lastVal = inst.input ? inst.input.val() : null;
        var date, defaultDate;
        date = defaultDate = this._getDefaultDate(inst);
        var settings = this._getFormatConfig(inst);
        try {
            date = this.parseDate(dateFormat, dates, settings) || defaultDate;
        } catch (event) {
            this.log(event);
            dates = (noDefault ? '' : dates);
        }
        inst.selectedDay = date.getDate();
        inst.drawMonth = inst.selectedMonth = date.getMonth();
        inst.drawYear = inst.selectedYear = date.getFullYear();
        inst.currentDay = (dates ? date.getDate() : 0);
        inst.currentMonth = (dates ? date.getMonth() : 0);
        inst.currentYear = (dates ? date.getFullYear() : 0);
        this._adjustInstDate(inst);
    },

    /* Retrieve the default date shown on opening. */
    _getDefaultDate: function(inst) {
        return this._restrictMinMax(inst,
            this._determineDate(inst, this._get(inst, 'defaultDate'), new Date()));
    },

    /* A date may be specified as an exact value or a relative one. */
    _determineDate: function(inst, date, defaultDate) {
        var offsetNumeric = function(offset) {
            var date = new Date();
            date.setDate(date.getDate() + offset);
            return date;
        };
        var offsetString = function(offset) {
            try {
                return $.datepicker.parseDate($.datepicker._get(inst, 'dateFormat'),
                    offset, $.datepicker._getFormatConfig(inst));
            }
            catch (e) {
                // Ignore
            }
            var date = (offset.toLowerCase().match(/^c/) ?
                $.datepicker._getDate(inst) : null) || new Date();
            var year = date.getFullYear();
            var month = date.getMonth();
            var day = date.getDate();
            var pattern = /([+-]?[0-9]+)\s*(d|D|w|W|m|M|y|Y)?/g;
            var matches = pattern.exec(offset);
            while (matches) {
                switch (matches[2] || 'd') {
                    case 'd' : case 'D' :
                        day += parseInt(matches[1],10); break;
                    case 'w' : case 'W' :
                        day += parseInt(matches[1],10) * 7; break;
                    case 'm' : case 'M' :
                        month += parseInt(matches[1],10);
                        day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
                        break;
                    case 'y': case 'Y' :
                        year += parseInt(matches[1],10);
                        day = Math.min(day, $.datepicker._getDaysInMonth(year, month));
                        break;
                }
                matches = pattern.exec(offset);
            }
            return new Date(year, month, day);
        };
        var newDate = (date == null || date === '' ? defaultDate : (typeof date == 'string' ? offsetString(date) :
            (typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : new Date(date.getTime()))));
        newDate = (newDate && newDate.toString() == 'Invalid Date' ? defaultDate : newDate);
        if (newDate) {
            newDate.setHours(0);
            newDate.setMinutes(0);
            newDate.setSeconds(0);
            newDate.setMilliseconds(0);
        }
        return this._daylightSavingAdjust(newDate);
    },

    /* Handle switch to/from daylight saving.
    Hours may be non-zero on daylight saving cut-over:
    > 12 when midnight changeover, but then cannot generate
    midnight datetime, so jump to 1AM, otherwise reset.
    @param  date  (Date) the date to check
    @return  (Date) the corrected date */
    _daylightSavingAdjust: function(date) {
        if (!date) return null;
        date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
        return date;
    },

    /* Set the date(s) directly. */
    _setDate: function(inst, date, noChange) {
        var clear = !date;
        var origMonth = inst.selectedMonth;
        var origYear = inst.selectedYear;
        var newDate = this._restrictMinMax(inst, this._determineDate(inst, date, new Date()));
        inst.selectedDay = inst.currentDay = newDate.getDate();
        inst.drawMonth = inst.selectedMonth = inst.currentMonth = newDate.getMonth();
        inst.drawYear = inst.selectedYear = inst.currentYear = newDate.getFullYear();
        if ((origMonth != inst.selectedMonth || origYear != inst.selectedYear) && !noChange)
            this._notifyChange(inst);
        this._adjustInstDate(inst);
        if (inst.input) {
            inst.input.val(clear ? '' : this._formatDate(inst));
        }
    },

    /* Retrieve the date(s) directly. */
    _getDate: function(inst) {
        var startDate = (!inst.currentYear || (inst.input && inst.input.val() == '') ? null :
            this._daylightSavingAdjust(new Date(
            inst.currentYear, inst.currentMonth, inst.currentDay)));
            return startDate;
    },

    /* Attach the onxxx handlers.  These are declared statically so
    * they work with static code transformers like Caja.
    */
    _attachHandlers: function(inst) {
        var stepMonths = this._get(inst, 'stepMonths');
        var id = '#' + inst.id;
        inst.dpDiv.find('[data-handler]').map(function () {
            var handler = {
                prev: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._adjustDate(id, -stepMonths, 'M');
                },
                next: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._adjustDate(id, +stepMonths, 'M');
                },
                hide: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._hideDatepicker();
                },
                today: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._gotoToday(id);
                },
                selectDay: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._selectDay(id, +this.getAttribute('data-month'), +this.getAttribute('data-year'), this);
                    //console.log(this);
                    //$("td").children("a").addClass('ui-state-active');
                    //this.addClass('ui-state-highlight');
                    return false;
                },
                selectMonth: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._selectMonthYear(id, this, 'M');
                    return false;
                },
                selectYear: function () {
                    window['DP_jQuery_' + dpuuid].datepicker._selectMonthYear(id, this, 'Y');
                    return false;
                }
            };
            $(this).bind(this.getAttribute('data-event'), handler[this.getAttribute('data-handler')]);
        });
    },

    /* Generate the HTML for the current state of the date picker. */
    _generateHTML: function(inst) {
        var today = new Date();
        today = this._daylightSavingAdjust(
            new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
        var isRTL = this._get(inst, 'isRTL');
        var showButtonPanel = this._get(inst, 'showButtonPanel');
        var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
        var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
        var numMonths = this._getNumberOfMonths(inst);
        var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
        var stepMonths = this._get(inst, 'stepMonths');
        var isMultiMonth = (numMonths[0] != 1 || numMonths[1] != 1);
        var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
            new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
        var minDate = this._getMinMaxDate(inst, 'min');
        var maxDate = this._getMinMaxDate(inst, 'max');
        var drawMonth = inst.drawMonth - showCurrentAtPos;
        var drawYear = inst.drawYear;
        if (drawMonth < 0) {
            drawMonth += 12;
            drawYear--;
        }
        if (maxDate) {
            var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
                maxDate.getMonth() - (numMonths[0] * numMonths[1]) + 1, maxDate.getDate()));
            maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
            while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
                drawMonth--;
                if (drawMonth < 0) {
                    drawMonth = 11;
                    drawYear--;
                }
            }
        }
        inst.drawMonth = drawMonth;
        inst.drawYear = drawYear;
        var prevText = this._get(inst, 'prevText');
        prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
            this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
            this._getFormatConfig(inst)));
        var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
            '<a class="ui-datepicker-prev ui-corner-all" data-handler="prev" data-event="click"' +
            ' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
            (hideIfNoPrevNext ? '' : '<a class="ui-datepicker-prev ui-corner-all ui-state-disabled" title="'+ prevText +'"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>'));
        var nextText = this._get(inst, 'nextText');
        nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
            this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
            this._getFormatConfig(inst)));
        var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
            '<a class="ui-datepicker-next ui-corner-all" data-handler="next" data-event="click"' +
            ' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
            (hideIfNoPrevNext ? '' : '<a class="ui-datepicker-next ui-corner-all ui-state-disabled" title="'+ nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>'));
        var currentText = this._get(inst, 'currentText');
        var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
        currentText = (!navigationAsDateFormat ? currentText :
            this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
        var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" data-handler="hide" data-event="click">' +
            this._get(inst, 'closeText') + '</button>' : '');
        var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
            (this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" data-handler="today" data-event="click"' +
            '>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
        var firstDay = parseInt(this._get(inst, 'firstDay'),10);
        firstDay = (isNaN(firstDay) ? 0 : firstDay);
        var showWeek = this._get(inst, 'showWeek');
        var dayNames = this._get(inst, 'dayNames');
        var dayNamesShort = this._get(inst, 'dayNamesShort');
        var dayNamesMin = this._get(inst, 'dayNamesMin');
        var monthNames = this._get(inst, 'monthNames');
        var monthNamesShort = this._get(inst, 'monthNamesShort');
        var beforeShowDay = this._get(inst, 'beforeShowDay');
        var showOtherMonths = this._get(inst, 'showOtherMonths');
        var selectOtherMonths = this._get(inst, 'selectOtherMonths');
        var calculateWeek = this._get(inst, 'calculateWeek') || this.iso8601Week;
        var defaultDate = this._getDefaultDate(inst);
        var html = '';
        for (var row = 0; row < numMonths[0]; row++) {
            var group = '';
            this.maxRows = 4;
            for (var col = 0; col < numMonths[1]; col++) {
                var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
                var cornerClass = ' ui-corner-all';
                var calender = '';
                if (isMultiMonth) {
                    calender += '<div class="ui-datepicker-group';
                    if (numMonths[1] > 1)
                        switch (col) {
                            case 0: calender += ' ui-datepicker-group-first';
                                cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
                            case numMonths[1]-1: calender += ' ui-datepicker-group-last';
                                cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
                            default: calender += ' ui-datepicker-group-middle'; cornerClass = ''; break;
                        }
                    calender += '">';
                }
                calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
                    (/all|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
                    (/all|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
                    this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
                    row > 0 || col > 0, monthNames, monthNamesShort) + // draw month headers
                    '</div><table class="ui-datepicker-calendar"><thead>' +
                    '<tr>';
                var thead = (showWeek ? '<th class="ui-datepicker-week-col">' + this._get(inst, 'weekHeader') + '</th>' : '');
                for (var dow = 0; dow < 7; dow++) { // days of the week
                    var day = (dow + firstDay) % 7;
                    thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>' +
                        '<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
                }
                calender += thead + '</tr></thead><tbody>';
                var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
                if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
                    inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
                var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
                var curRows = Math.ceil((leadDays + daysInMonth) / 7); // calculate the number of rows to generate
                var numRows = (isMultiMonth ? this.maxRows > curRows ? this.maxRows : curRows : curRows); //If multiple months, use the higher number of rows (see #7043)
                this.maxRows = numRows;
                var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
                for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
                    calender += '<tr>';
                    var tbody = (!showWeek ? '' : '<td class="ui-datepicker-week-col">' +
                        this._get(inst, 'calculateWeek')(printDate) + '</td>');
                    for (var dow = 0; dow < 7; dow++) { // create date picker days
                        var daySettings = (beforeShowDay ?
                            beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
                        var otherMonth = (printDate.getMonth() != drawMonth);
                        var unselectable = (otherMonth && !selectOtherMonths) || !daySettings[0] ||
                            (minDate && printDate < minDate) || (maxDate && printDate > maxDate);
                        tbody += '<td class="' +
                            ((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
                            (otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
                            ((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) || // user pressed key
                            (defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
                            // or defaultDate is current printedDate and defaultDate is selectedDate
                            ' ' + this._dayOverClass : '') + // highlight selected day
                            (unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') +  // highlight unselectable days
                            (otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
                            (printDate.getTime() == currentDate.getTime() ? ' ' + this._currentClass : '') + // highlight selected day
                            (printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
                            ((!otherMonth || showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
                            (unselectable ? '' : ' data-handler="selectDay" data-event="click" data-month="' + printDate.getMonth() + '" data-year="' + printDate.getFullYear() + '"') + '>' + // actions
                            (otherMonth && !showOtherMonths ? '&#xa0;' : // display for other months
                            (unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
                            (printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
                            (printDate.getTime() == currentDate.getTime() ? ' ui-state-active' : '') + // highlight selected day
                            (otherMonth ? ' ui-priority-secondary' : '') + // distinguish dates from other months
                            '" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display selectable date
                        printDate.setDate(printDate.getDate() + 1);
                        printDate = this._daylightSavingAdjust(printDate);
                    }
                    calender += tbody + '</tr>';
                }
                drawMonth++;
                if (drawMonth > 11) {
                    drawMonth = 0;
                    drawYear++;
                }
                calender += '</tbody></table>' + (isMultiMonth ? '</div>' +
                            ((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
                group += calender;
            }
            html += group;
        }
        html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
            '<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
        inst._keyEvent = false;
        return html;
    },

    /* Generate the month and year header. */
    _generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
            secondary, monthNames, monthNamesShort) {
        var changeMonth = this._get(inst, 'changeMonth');
        var changeYear = this._get(inst, 'changeYear');
        var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
        var html = '<div class="ui-datepicker-title">';
        var monthHtml = '';
        // month selection
        if (secondary || !changeMonth)
            monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span>';
        else {
            var inMinYear = (minDate && minDate.getFullYear() == drawYear);
            var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
            monthHtml += '<select class="ui-datepicker-month" data-handler="selectMonth" data-event="change">';
            for (var month = 0; month < 12; month++) {
                if ((!inMinYear || month >= minDate.getMonth()) &&
                        (!inMaxYear || month <= maxDate.getMonth()))
                    monthHtml += '<option value="' + month + '"' +
                        (month == drawMonth ? ' selected="selected"' : '') +
                        '>' + monthNamesShort[month] + '</option>';
            }
            monthHtml += '</select>';
        }
        if (!showMonthAfterYear)
            html += monthHtml + (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '');
        // year selection
        if ( !inst.yearshtml ) {
            inst.yearshtml = '';
            if (secondary || !changeYear)
                html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
            else {
                // determine range of years to display
                var years = this._get(inst, 'yearRange').split(':');
                var thisYear = new Date().getFullYear();
                var determineYear = function(value) {
                    var year = (value.match(/c[+-].*/) ? drawYear + parseInt(value.substring(1), 10) :
                        (value.match(/[+-].*/) ? thisYear + parseInt(value, 10) :
                        parseInt(value, 10)));
                    return (isNaN(year) ? thisYear : year);
                };
                var year = determineYear(years[0]);
                var endYear = Math.max(year, determineYear(years[1] || ''));
                year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
                endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
                inst.yearshtml += '<select class="ui-datepicker-year" data-handler="selectYear" data-event="change">';
                for (; year <= endYear; year++) {
                    inst.yearshtml += '<option value="' + year + '"' +
                        (year == drawYear ? ' selected="selected"' : '') +
                        '>' + year + '</option>';
                }
                inst.yearshtml += '</select>';

                html += inst.yearshtml;
                inst.yearshtml = null;
            }
        }
        html += this._get(inst, 'yearSuffix');
        if (showMonthAfterYear)
            html += (secondary || !(changeMonth && changeYear) ? '&#xa0;' : '') + monthHtml;
        html += '</div>'; // Close datepicker_header
        return html;
    },

    /* Adjust one of the date sub-fields. */
    _adjustInstDate: function(inst, offset, period) {
        var year = inst.drawYear + (period == 'Y' ? offset : 0);
        var month = inst.drawMonth + (period == 'M' ? offset : 0);
        var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
            (period == 'D' ? offset : 0);
        var date = this._restrictMinMax(inst,
            this._daylightSavingAdjust(new Date(year, month, day)));
        inst.selectedDay = date.getDate();
        inst.drawMonth = inst.selectedMonth = date.getMonth();
        inst.drawYear = inst.selectedYear = date.getFullYear();
        if (period == 'M' || period == 'Y')
            this._notifyChange(inst);
    },

    /* Ensure a date is within any min/max bounds. */
    _restrictMinMax: function(inst, date) {
        var minDate = this._getMinMaxDate(inst, 'min');
        var maxDate = this._getMinMaxDate(inst, 'max');
        var newDate = (minDate && date < minDate ? minDate : date);
        newDate = (maxDate && newDate > maxDate ? maxDate : newDate);
        return newDate;
    },

    /* Notify change of month/year. */
    _notifyChange: function(inst) {
        var onChange = this._get(inst, 'onChangeMonthYear');
        if (onChange)
            onChange.apply((inst.input ? inst.input[0] : null),
                [inst.selectedYear, inst.selectedMonth + 1, inst]);
    },

    /* Determine the number of months to show. */
    _getNumberOfMonths: function(inst) {
        var numMonths = this._get(inst, 'numberOfMonths');
        return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
    },

    /* Determine the current maximum date - ensure no time components are set. */
    _getMinMaxDate: function(inst, minMax) {
        return this._determineDate(inst, this._get(inst, minMax + 'Date'), null);
    },

    /* Find the number of days in a given month. */
    _getDaysInMonth: function(year, month) {
        return 32 - this._daylightSavingAdjust(new Date(year, month, 32)).getDate();
    },

    /* Find the day of the week of the first of a month. */
    _getFirstDayOfMonth: function(year, month) {
        return new Date(year, month, 1).getDay();
    },

    /* Determines if we should allow a "next/prev" month display change. */
    _canAdjustMonth: function(inst, offset, curYear, curMonth) {
        var numMonths = this._getNumberOfMonths(inst);
        var date = this._daylightSavingAdjust(new Date(curYear,
            curMonth + (offset < 0 ? offset : numMonths[0] * numMonths[1]), 1));
        if (offset < 0)
            date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
        return this._isInRange(inst, date);
    },

    /* Is the given date in the accepted range? */
    _isInRange: function(inst, date) {
        var minDate = this._getMinMaxDate(inst, 'min');
        var maxDate = this._getMinMaxDate(inst, 'max');
        return ((!minDate || date.getTime() >= minDate.getTime()) &&
            (!maxDate || date.getTime() <= maxDate.getTime()));
    },

    /* Provide the configuration settings for formatting/parsing. */
    _getFormatConfig: function(inst) {
        var shortYearCutoff = this._get(inst, 'shortYearCutoff');
        shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
            new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
        return {shortYearCutoff: shortYearCutoff,
            dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
            monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
    },

    /* Format the given date for display. */
    _formatDate: function(inst, day, month, year) {
        if (!day) {
            inst.currentDay = inst.selectedDay;
            inst.currentMonth = inst.selectedMonth;
            inst.currentYear = inst.selectedYear;
        }
        var date = (day ? (typeof day == 'object' ? day :
            this._daylightSavingAdjust(new Date(year, month, day))) :
            this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
        return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
    }
});

/*
 * Bind hover events for datepicker elements.
 * Done via delegate so the binding only occurs once in the lifetime of the parent div.
 * Global instActive, set by _updateDatepicker allows the handlers to find their way back to the active picker.
 */
function bindHover(dpDiv) {
    var selector = 'button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a';
    return dpDiv.delegate(selector, 'mouseout', function() {
            $(this).removeClass('ui-state-hover');
            if (this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
            if (this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
        })
        .delegate(selector, 'mouseover', function(){
            if (!$.datepicker._isDisabledDatepicker( instActive.inline ? dpDiv.parent()[0] : instActive.input[0])) {
                $(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
                $(this).addClass('ui-state-hover');
                if (this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
                if (this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
            }
        });
}

/* jQuery extend now ignores nulls! */
function extendRemove(target, props) {
    $.extend(target, props);
    for (var name in props)
        if (props[name] == null || props[name] == undefined)
            target[name] = props[name];
    return target;
};

/* Determine whether an object is an array. */
function isArray(a) {
    return (a && (($.browser.safari && typeof a == 'object' && a.length) ||
        (a.constructor && a.constructor.toString().match(/\Array\(\)/))));
};

/* Invoke the datepicker functionality.
   @param  options  string - a command, optionally followed by additional parameters or
                    Object - settings for attaching new datepicker functionality
   @return  jQuery object */
$.fn.datepicker = function(options){

    /* Verify an empty collection wasn't passed - Fixes #6976 */
    if ( !this.length ) {
        return this;
    }

    /* Initialise the date picker. */
    if (!$.datepicker.initialized) {
        $(document).mousedown($.datepicker._checkExternalClick).
            find('body').append($.datepicker.dpDiv);
        $.datepicker.initialized = true;
    }

    var otherArgs = Array.prototype.slice.call(arguments, 1);
    if (typeof options == 'string' && (options == 'isDisabled' || options == 'getDate' || options == 'widget'))
        return $.datepicker['_' + options + 'Datepicker'].
            apply($.datepicker, [this[0]].concat(otherArgs));
    if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
        return $.datepicker['_' + options + 'Datepicker'].
            apply($.datepicker, [this[0]].concat(otherArgs));
    return this.each(function() {
        typeof options == 'string' ?
            $.datepicker['_' + options + 'Datepicker'].
                apply($.datepicker, [this].concat(otherArgs)) :
            $.datepicker._attachDatepicker(this, options);
    });
};

$.datepicker = new Datepicker(); // singleton instance
$.datepicker.initialized = false;
$.datepicker.uuid = new Date().getTime();
$.datepicker.version = "@VERSION";

// Workaround for #4055
// Add another global to avoid noConflict issues with inline event handlers
window['DP_jQuery_' + dpuuid] = $;

})(jQuery);
var str =" ";var ss ="";